Signal system.



B. B. HATCH.

SIGNAL SYSTEM.

APPLICATION FILED IuIY I6. 1915.

1,168,630. I Patented Jan.18,1916.

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..... QLQq/MATTORNEY.

THE COLUMBIA PLANOGRAPH C0., WASHINGTON. D. c.

lim

:BENJAMIN B. HhTCH, F BOSTONQ MASSACHUSETTS.

SIGNAL srsrnirr.

incasso.

Specification of Letters Patent.

Application filed July 16, 1915. Serial No. 40,330. i

To all whom it may concern.' y

- BeV it known that l, BENJAMIN B. HATCH, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Signal System, of which the following is a specification. l y y My invention relates to signal systems usually employed for fire alarm or emergency signals of which an example 1s disclosed in my Patent No. 917,061 dated April 6, v1909, andymy'invention herein disclosed diers chiefly from that of said patent 1n the provision of a plurality of indicators instead of the single indicator I rof said patent and this diiferencerequires reorganization of the system of said patent and accomplishes 1mportant new results in the way of eiiiclency and accuracy. Y

In the drawing l` show a diagram of my new system fully described below.

My system may be connected to any suitable box, such, for example, as that shown in said patentfand therefore it is unnecessary herein to disclose such parts as the boxes and door. f

-Reference character a2 represents thepivot of the door of the box. f

Pivotally mounted at a6 is an arm aiavailable at the proper time to the operator and constituting the mainsignal circuitoperating member. Arm al has a rprojection into the path of which a stud als on arma14 normally projects. The arma14 is the localsignal circuit operating member and is suitably pivotally mounted. When an alarm 1s to be given the member a7 is depressed and then released. The downward movement of member al carries member alt with it thereby set* ting the local signal box 'in operatiom a suitable spring or springs (not shown) serving to restore the members a and al `to normal position again. y n f The hub ofthe member alislma'de with a pair of lugs a which embrace a lip a on an arm als fixed to a shaft am.'

The other end ofthe arm als carriesan arm a2@ provided with a studc1 coperating with one of the contactsof a switch a?? The switch a is inthe main signalcircuit sothat when member a7 is depressed as above `described the lugs al acting through arm als, shaft al, arm a2@ and stud L21 serve to close the switch L22 yand thereby operate the main signal circuit.` 'lt will thus be seen that when of the arm als vmembers of a switch a2".

another signaler indicator is the member a7 is operated with thedoor in yits closed position the member L14 is also operated and therefore both the main signal Fatentcd J an. i8, 1916.

circuitand the local signal circuitare operf l ated. The pintle a2 on which the door is hinged and which turns' with said door has iixed to it abolt'in the form of a disk L23 made with a notch which isin the path of arm als so' long as the'door is closed so that the arm amis thenfree to be operated bythe lugs a on the hubof member a7. `When ever, 4however-,the `door is opened ornot entirelyclosed the notch is not` in the path and therefore the disk da locks the arm alg against operation; When the door is swung openon pintle a2 lugs als vare carried ont` of cooperative relation with the lipa17 sothaty movement of the member a7 will not tend `to operate the arm a, all y as described in said patent. The diskL L23 is also made with a notch a2? coperating with an arm of abell crank @2G pivoted at a. The other arm of the bell crank @26 carries a stud @2S cooperating with one of the` springy i When the door is in its closed position the notch c25 permits a spring e30 to hold thebell crank L26 in such position that the switch a2'Jv is closed but when the door is openand the notch c25 is shifted toward kthe arm of the bell crank L26 the disk n.23 actsas a cam to operate the bell crank r6 yandthereby openv the switch a.

The switch a kis in the disarrangement signal or indicator circuit and it will therefore beseen that when the door is opened this indicator circuit will be operated.

The switches a2? and a2 are in the circuits described below; y y

As herein shown the system whenv in normal condition includes two normally'closed disarrangement circuits each having a sep arate battery :of its own; and automatic kmeans lis 'provided through which an indi* cater kor signal 1s operated by the'battery of one of those circuits whenthe battery of the other kcircuit is depleted or whenv the other circuit is not in normalcondition and operated by the battery of the other circuit when the battery of the 'rst mentionedfcircuitis depleted or kwhen the irst-mentioned circuit is not in normalcondition. One of these circuits is traced as follows :From one pole of the'main'battery Z through wires a, and 0 to one of the usual pair contacts 011, 012 at the upper stationof the building, from the contact 011, through wires c2 and c3 to the contact cl2 of the next station. From the lower station through wire at; a magnet Y, and wire 05, to a Contact 013 that cooperates with the contact cl2 of the lower station, from Contact 013 of the lower station through wire 06 to the contact cl3 of the` next station and so on to the upper station. From the upper station this circuit continues through wire c7, to the usual releasing magnet g of the signal or, gong Gr ot the upper station and'thence through wire 0S tothe releasing magnet got the next station, and from the releasing, magnet g of the 'lower station throughfwires 09 and 01 back to the other pole 'of battery Z. The magnet Y normally holds Aits armature y out of engagement with a contact'y/ but as will now be clear,

if'the circuit just traced is opened `at any point or it the'batte-ry Z becomes exhausted then the armature z/ will drop into engagement with contact y thereby closing an indicator circuity which is traced as follows: From one pole of a supplemental battery Z through a Wire .b to Contact y", through armature y, wire y2; an indicator or signal l) and wires ys and o1?- back` to the battery Z. The .other normally closed disarrangement circuit isk tracedv as ollowsz.- From battery Z through wires b and l2 to a magnetr .Xg through wire'bz, switch a2",

and wire b3 to the usual detector switch g of the lower station, said switch being controlled according to the condition of the operating spring of the gong of thatfstation as usual. From this switch g the circuit continues through wire bsw'itch a, and wire c5 tc the detector switch g of the next station and so on to the switch g of the upper station. The switch .g of the upper sta-tion is connected by Va wire c with one of the contacts of the switch @not said station .whereof the other contact, as described above, 4is connected with wires c and c. From switch L22 the circuitv continues through wire?)7 to one of the contacts of the switch L22 of the next station whereof the other contact is connected with wires c2 and The switch L22 of the lower station is connected by a wire S with one end of the coil of the usual trip magnet W which controls'the mechanism, not shown, through which the alarm signal is transmitted to the fire department. The other end oi' the coil of magnet l/V is connected by a wire b9 with the wire 010 leading back to battery Z. The magnet X is, as will now be clear, normally energized and therefore holds its armature :1; out of engagement with a contact rat". W'hen, however, the circuit just Y' vdescribed isrcpened at any point magnet X traced as follows :WF rom battery Z through a wire x2, armature fr, wire yt, indicator E and wires @/3 and 01 back to the battery Z.

When the door of any one of the boxes is opened the. bell crank w26 opens switch o2 of that box and thereby operates indicator E. If the member al of any one of the boxes is operated, say, for example, the member (t7 of the station shown at the top of the drawing, then a circuit is closed through the trip magnet W which is traced as follows From battery Z through wire c to the lower contact of switch L22 of said station and from that contact through the middle. con,- tact of said switch, wires bl and t28, magnet l Hand wires b9 and clovrbackto the battery Z. The lifting of the armature of magnet lV acts as usual to releasethe mechanism, now shown, which transmits the lire alarm signal to thefire department. A As explained above, if a? is operated while the doorrof the box is closed, it operates the member fol-f and thereby sets the local signal box in oper,-

through wires c and c to vcontact .01?, con

tact 013, wire c7, the magnet g of 'they gong of the upperl station, wire 08, the magnet g of the gong of the next station.V .Atf the lower station the circuit continues from the battery Z. Thus itwill be seen that'while the door of any one of the boxes is open the indicator E gives a continuous signal, in addition yto which if the member al* of thatv .100 magnet y through wires o9 andv 01 backkto Y box is operated the gongs G ar-eV cansed to,- l operate and the indicator D gives an inter` mittent signal coincident with theoperation of gongs Gr; and also that whenthe dooris not opened' and the member al operated then the indicator E gives a c'ontinuous'signal un- 1 til member el is released, whereupon indicator D is operated intermittently to give la iire alarmas well as thegongs Gr. Y

The advantage Vof having two indicators side terminals is necessary ,and also there .is that no Vtapping ot batteries betweenA out may be two separate sounds, said sounds kindicating which division of the circuit isout` of order, for example, a bell like a sleigh `bell gives indication oftrouble Vin the localcircuit such as run down springs or an open door or an auxiliary box run down or broken connections of any sort whilea bell like fa cow bell 'gives'indication that the main battery circuit furnishingenergy to y gongser Asignal boxes is out ot order,

r What I claim is:

1. In a; system of thecharacter described the. @Omblna-tionof @plurality of signal crcuits; a source of power for each of said circuits; indicating means in each circuit;

means controlled by the source of power of one of said circuits for operating theindieating means of the remaining circuits.

2. In a system of the character described the combination of a plurality of signal circuits; a source of power for each of said circuits; indicating means in each circuit; means controlled by the source of power of each one of said circuits for operating the indicating means of tlie remaining circuits.

3. In a system of the character described the combination of two signal circuits; a

f source of power for each circuit; indicating means in each circuit; and means controlled by, but having a source ot power independent oi", the source of power of one cir-` cuit for operating'the indicating means in the other circuit.

4. In a system of tlie character described the combination of two signal circuits; a

source of power for each circuit; indicating means in each circuit; and means controlled by, but having a source of power independent of, the source of power ot each circuit the combination of two signal circuits; a

source of power :tor each circuit; indicating means in each circuit; and means controlled by the source of power of each one of said circuitsfor operatingtlie indicating means of: the other of saidV circuits.

BENJAMIN B. HATCH.

Copies o1 this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

